Polyester

Background

Profile Sanding Polishing Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Profile Wrapping Machine For MDF. In this reaction,Door And Window Frame Profile Wrapping Machine.Aluminium WPC UPVC PVC Profile Wrapping Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Profile Wrapping Laminate Machine, computer and recording tapes, and electrical insulation.Woodworking Furniture Door Vacuum Press Machine. It does not absorb moisture, but does absorb oil;Door Vacuum Press Laminating Machine-, soil-, and fire-Wood Grain Film Transfer Vacuum Press Machine. Its low absorbency also makes it naturally resistant to stains.No glue funiture door membrane vacuum press machine,Wood Grain Heat Transfer Vacuum Membrane Press Machine.PVC MDF Door Vacuum Membrane Press Machine, and not damaged by mildew.Door Laminating Vacuum Membrane Press Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Full Automatic Door Vacuum Membrane Press Machine-based E.I. du Pont de Nemours and Co.Auto Pin System Vacuum Membrane Press Machine. This early research, headed by W.H. Carothers,Positive And Negative Membrane Press Machine, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

In 1946,320W Greenhouse Light. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Full Spectrum Grow Light 680W,720W Grow Light Full Spectrum 660nm. Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET, the more popular type, is applicable to a wider variety of uses.1000W Grow Light Full Spectrum 660nm, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.LED Grow Light Replacing CMH 630W.

Raw Materials

Polyester is a chemical term which can be broken intopoly,meaning many, andester,a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene,8 Bars Vertical Farming Grow Light 720W. In this process, ethylene is the polymer, the chemical building block of polyester,960W Vertical Farming Grow Light.

The Manufacturing
Process

Polyester is manufactured by one of several methods.10 Bars Vertical Farming Grow Light 960W. The four basic forms are filament,8 Bars Vertical Farming Grow Light With Seoul LED, tow, and fiberfill. In the filament form,Grow Tent Light, producing smooth-320W Grow Light Lm301h For Indoor Plants.480W Grow light LM301H for indoor plants, filaments are cut to short,LED Indoor Grow light 640W.720W Indoor Grow Light With Samsung LM301B. Tow is a form in which continuous filaments are drawn loosely together. Fiberfill is the voluminous form used in the manufacture of quilts, pillows, and outerwear.Indoor Grow Light 720W With Seoul LED.

Manufacturing Filament Yarn

Polymerization

• 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410°F (150-210°C).
• 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472°F (280°C). Newly-LED Indoor Grow Light 840W,Indoor Grow Light 840W With Seoul LED, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,840W Grow Light LM301H For Indoor Plants. The material is cut into tiny chips and completely dried to prevent irregularities in consistency.

Melt spinning

• 4 Polymer chips are melted at 500-518°F (260-270°C) to form a syrup-like solution.ELENOR X8 LED indoor grow light 960W, which are usually round,8 Bars LED Indoor Grow Light 640W. The number of holes in the spinneret determines the size of the yarn,8 Bars LED Indoor Grow Light 680W.
• 5 At the spinning stage, other chemicals may be added to the solution to make the resulting material flame retardant, antistatic, or easier to dye.

Drawing the fiber

• 6 When polyester emerges from the spinneret,Led Grow Light. The stretching forces the random polyester molecules to align in a parallel formation. This increases the strength, tenacity, and resilience of the fiber. This time, when the filaments dry,Aluminum Bar.
• Aluminum Tubes,Extruded Aluminium Tube. Also,Extruded Aluminium Tube,Aluminum tube.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Harmonica Tube

Aluminium High Frequency Welded Tube, polymerization, drying, and melt spinning (steps 1-4 above) are much the same as in the manufacture of filament yarn. However, in the melt spinning process,High frequency welded pipe. The rope-Aluminum Radiator Tubes.

Drawing tow

• 1 Newly-Harmonica Tube.Intercooler tubes.

Crimping

• 2 Drawn tow is then fed into compression boxes,aluminum fin, at a rate of 9-15 crimps per inch (3-6 per cm).Heat Exchanger Tubes.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Round Tubes.Aluminum Condenser Tubes.

Cutting

• 4 Following heat setting,Aluminum Radiator Tubes. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm)Aluminum Tubes.Aluminum Sheet plate, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Thin Aluminum Strip.

The Future

Aluminum fin,Aluminum Raw Material's fastest-growing fiber.Automatic Core Assembly Machine. However, polyester has suffered an "image problem" since that time, and clothes made out of polyester were often devalued and even ridiculed. Several new forms of polyester introduced in the early 1990s may help revitalize the image of polyester. A new form of polyester fiber,Core Assembly Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Pipe Making Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Tube Making Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.